Product Description
Premium factory-direct HZ-A1VO028DNC200/10BRVA2K Axial Piston Variable Displacement Pump, precision-manufactured as a 100% direct drop-in replacement for OEM Bosch Rexroth A1VO028 DNC200 /10BRVA2K. Engineered to replace inefficient fixed-displacement gear pumps, this compact $28\text{ cm}^3/\text{rev}$ fluid power unit features an integrated DNC200 Load Sensing and pressure compensator valve, delivering dynamic, energy-saving hydraulic response for agricultural tractors, harvesters, municipal sweepers, and industrial power packs. Built using high-density ductile iron housings and high-spec FKM (Viton) dynamic seals, our HZ-A1VO028 pump reliably operates at continuous pressures up to 250 barwith peak shock limits up to 280 bar
Key Technical Highlights
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00% Direct Bolt-on OEM Interchangeability: Reverse-engineered strictly to original Bosch Rexroth A1VO blueprints. Identical mounting flanges, drive shafts, and hydraulic ports guarantee a zero-stress drop-in swap.
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Pre-Calibrated DNC200 Load-Sensing Control: Integrated DNC pressure/flow compensator spools are micro-honed with clearances under 0.0015 mm, reacting within milliseconds to load changes to eliminate energy loss and oil shearing.
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High-Temperature Viton Seals (‘V’ Spec): Equipped with high-grade Viton rotary shaft seals and O-rings, providing dynamic sealing reliability under high operating thermal cycles up to 115$115^\circ\text{C}$
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Haozheng Model Code OEM Cross Reference Technical Specifications (28 cm³/rev) HZ-A1VO028DNC200/10BRVA2K • Bosch Rexroth: A1VO028DNC200/10BRVA2K
• Series: A1VO 28 Series 10
• Control: DNC200 Load Sensing (200 Bar)• Displacement: 28 cm³/rev (1.71 in³/rev)
• Nominal Pressure: 250 bar (3625 PSI)
• Max Peak Pressure: 280 bar (4060 PSI)
• Control Type: DNC Load Sensing
• Seals & Mount: Viton Seals / Standard FlangeHaozheng Hydraulic Production Processing Diagram
TESTING AND FINISHED PRODUCTS
The professional hydraulic quality inspection bench conducts various technical data inspections on the produced hydraulic pumps and motors to ensure that the products delivered to customers can be used with confidence!
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FAQ
Q1: Compact variable pumps can suffer from sluggish LS response or pressure fluctuation. How does Haozheng ensure stable DNC200 performance?
A: Sluggish control occurs when compensator spool clearances are inconsistent. At Guangdong Haozheng, our DFR/DNC compensator spools are micro-ground on precision CNC internal grinders ($<0.0015\text{ mm}$). Every A1VO028 pump undergoes automated dynamic flow testing to calibrate stroke and destroke response curves, ensuring immediate fluid delivery when actuator demand changes.
Q2: Will this HZ-A1VO028 replace my original Rexroth gear-pump upgrade kit directly on an agricultural tractor?
A: Yes, 100%. The A1VO series is specifically designed with compact outer envelope dimensions and standard mounting pads to serve as a direct variable-displacement upgrade over gear pumps. Flanges, shafts, and port positions align perfectly with original Rexroth specifications.
